Thanks a lot for playing our game and sharing about it! We're glad that you like it! Afterward's story indeed has similarities with Horizon Zero Dawn, but Horizon was actually announced after we started the production of Afterward! And we had the chance to have as our referent Jonathan Colin, who is a game animator at Guerrilla on Horizon Zero Dawn :)
We would love to develop the game further as well; right now it is not planned, but if the occasion presents itself, nothing's impossible!